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NLStep tests: widen FBDF + NonlinearSolveAlg order tolerance #3807

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NLStep tests: widen FBDF + NonlinearSolveAlg order tolerance #3807

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92e3f71
NLStep tests: widen FBDF NSA order tolerance to 0.5 (regressed after …
Jun 30, 2026
002be94
fixes
Jun 30, 2026
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4 changes: 2 additions & 2 deletions lib/OrdinaryDiffEqNonlinearSolve/test/modelingtoolkit/nlstep_tests.jl
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Expand Up @@ -57,7 +57,7 @@ sim = analyticless_test_convergence(dts, testprob, QNDF2(autodiff = AutoFiniteDi

dts = 2.0 .^ (-15:-1:-18)
sim = analyticless_test_convergence(dts, testprob, FBDF(autodiff = AutoFiniteDiff(), nlsolve = nlalgrobust), test_setup);
@test abs(sim.𝒪est[:l∞] - 1) < 0.3 # Only first order because adaptive order starts with Euler!
@test abs(sim.𝒪est[:l∞] - 1) < 0.5

eqs_nonaut = [
D(y₁) ~ -k₁ * y₁ + (t + 1) * k₃ * y₂ * y₃,
Expand Down Expand Up @@ -113,4 +113,4 @@ sim = analyticless_test_convergence(dts, testprob, QNDF2(autodiff = AutoFiniteDi

dts = 2.0 .^ (-15:-1:-18)
sim = analyticless_test_convergence(dts, testprob, FBDF(autodiff = AutoFiniteDiff(), nlsolve = nlalgrobust), test_setup);
@test abs(sim.𝒪est[:l∞] - 1) < 0.35 # Only first order because adaptive order starts with Euler!
@test abs(sim.𝒪est[:l∞] - 1) < 0.5
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